Besj avajlable cop



Dec. 18 ,1923.

1,478,225 I. w. HENRY ELECTRIC WELDING 0R FORGING APPARATUS Original Filed Sept. 12. 1921 2 Sheets-Shet '1 I M w. ,/WZWW WM Patented Dec. 18, 1923. 1,478,225

UNITED STATES PATENT OFFICE.

IRA. W. HENRY, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNE ASSIGN- MENTS, TO THE ELECTRIC FORGE CORPORATION, OF NEW YORK, N. Y., A CORPORA- TION OF DELAWARE. k

(ELECTRIC WE DING on rename APPARATUS.

Application filed September 12, 1921, SerlaiNo. 499,879. Renewed November 23, 1922.

' Toallwhomitmaycmwem: currentat any desired distance from the Be-it known that I, IRA W. HENRY, a citicore. zen of'the United States, and resident of The under co re wall is indicated by 4 and New York, in the county of New'Y'ork and itsside" wallsby 5. The latter are trans- State of New-York, have invented certain versely and oppositely bored between the new and usefullinprovements in Electric upper and under corewalls for transverse Welding'orForging Apparatus 'ofwhich the "passage of a shaft 6, the ends of which are following is a specification; 5 fixed in'the walls 5between which the shaft This invention relates-toanelectric weldis enclosed bye tubular insulating sleeve 6. 10, ing or-forging apparatus-adapted; foruse in Between collars 7 carried by the insulated working themethodiset forth my-pend n% portion of the shaft, each collar 7 being adapplication; Serial No. +489',869, fi'led eug'us "'jacent and insulated from a side wall 5 by 4, 1921 inztliefUnited States Pate'ntOflice, Len-insulating collar 7, there are mounted but-is not 'resti'icted tdsuchustafi two series fof'fedgewise swingahle {copper 15 .The object ofi-the present irrvention is to"'jplates';j one series comprising the plates 8; roduce/an lectricihveldingor forging?a sf ndlthe other series comprising the plates 1? aratusona' pi'inciple that rhakesihprae 9."- The -11'p'pe'z"er 1d portionsfor headSlO'of ticarl, in a portabIe-form,- for convenient-use these plates are, transversely boredflto fit on difi'erent'estol'ies of highrstrlietural sfieel "'swin'gah ly on the insulating sleeve 6, the 2 frame-buildingsyforiuse in the constructionheads 10 of the members of'one Seriesof of steel shi s;i bridges',l-'tunnel wpik and genplatesalternating with, and beingin fiatwise erallyin alzsiiauatibnszwyhere -'condit1ons are sliding contact 'withz' the *headsof the memmet-byZapparatus:that isiportable] Nev *bers of th o'ther series of plates] The plates -ertheless;=mgninventiohmay be embodied in are all of a like dimension, and long enough 25 stationary;'apparatusfinln anyfeventfithe' to project pastthe"'undei-"corewall 4,1118

principle of the invention is such, that by 'the I'u'iiiber of: oneseries of the .plates passing ;use of thin and -=therefore'1re1a tive1ylight 'one'side' of the corewall 4; and the'members 'TWGight; easily flexible -z'hnd g low roostfeed "o'ffthe other series passing the other side of .rvires,:the-welding onforging current may-be thef'coreiwall I I aobronght to;the-rapparatushat any distance *B'y" said "alternate siirangeinentfqf the fromlthe source ,oiithe fieIH-ingcurrent Withplate -'-heads* of the 'tivo is'eries'; the plates ,0111? 1 iii-heavy; ;m ?fl X- in each series are spacedifiatwisehpart' be pensive-current. supply conductors." l ow their heads, fornjiing ventilating'spaces iIn theziccompaiiyingflraivingi}forming a""'I1 -'between them; I

5 part'heredfimnd ilhlstrating t e principle 'VlThereTthe plates pass the'under'corewal] of the-invention in the best-mode now known-"4 lthejfreiecesserl at '12 on their inward to meet applying that principle, I "edges,' "so "that the free'en ds of the plates :;Fig. 1:,isiaii?end=view,- and {-1- "in' each series may bemoved toward each igr2-sa sidezfiew' ofinyn'ew electrie-wve'ldp'tlier below and under thefunder oore wall 4.

in'g or for'gin uapparatusxin one form of Each series of copper plates is a oomembodiment .o the principle offthisinVenponnt part of a. jaw, and the member of tion. i -="T-" f- -I f' each series of plates are, adjacent their Fig. 3 is aiherizontahs eetional view at free-"ends,'spaced apart by copperwashers line 3-3' of Fig. 2, looking downs {'13 'o'li-a c'lamp bolt '14 whicli i's passed-trans- 45 i Fi'g. 4'is apers QCtiVQVlEWf of one ofithe wersel through the free ena portiene ofithe two opposed;- roe able; water-'cool'ed,-"conplates in each series and'tli'efspaeing wash- 0 qductor j-aws'remotefiothe faeerhf thejaws" 'ers 13: "Each'j'aw i's coinpleted $119 $41 being- -broken away for greater-glefirj1ejssi klitio'n'ft'o thefreeends:ef th co p plates In that form of the -inyention nowfi llus in each serie'so'f "aiti'ans'izerse; roekahle,

trated, 1*" indicates the central' 'openiii" of a copper-jaw 'nieifib'erlhigiying at egfiih 'epd en closed transformer core; the upper We; 1'2"of outwardly projeieti g luglfiiptegralgw th'its;

which carries the-primary wl'ndings 3- for interinediate'i' flee-Faces'15edy-" ertien 16.

connection with a source of electric welding The two lugs outwardly of the outward surnoze le L21.

4 elena for-c of the jaw member body 16 are transversely hored at 17; the jaw body having its outward face opposed tothe inward edges of the opper plates, the h1 l5 projectin ioutwardly of the members of the series and the clnmp bolt 14 passing thronglrthe lug holes 17. The clamp lidlt is shown with the head '18 hearing on'one lug and a nnt-19 bearing on thethe other lug. Thus, each complementary jaw iernher is. rockably mounted on the "free"'ehds' 'of' the copper plates in each .serie s oipletes, end -the-inward 'faces of each tmnsi'eise jaw member may be pressed one to\ ards another by any suitable mechanical pressure.

Each jaw member is adapted to beiwaten cpoled apd; to this end-,is lengthwisefiro- Z -videclj\1.' ith; t,wo parallel t 201 65; 20;;spaced "jrpgrt oneyfrompnother. -A yzg-ter intake v i i'P- l 259 l f'il'h 'f 2 wat es a .n-ez ez s.- -p zid dli "tl h r 1 2' emal 21 and 221' projecting from-the seme end of vt je mb f l bwer s the othe n (if the j aw 'nieinber the two bores 20 ere tmnsversely 4 interse 'tedby a bore 23 which con venie ntly eitendsljrom edgqto edze of the jgnv bolt an 1 ha i s zis i vs l r Pl 24, the endsjof the two;;bores -2O {opposite the water intake and escape-nozzles being eoch closed bya, -plug 2,5.

The twosiyingah le-serie of coppeppletes and vashers, together with the I copper ;transwerse .jaw r'nemhen foreach series,- eonstitntethe functional eqnim lent, of; a see- I ondarywinding of a stepdo vn 1 tr-ensformer.

' Thus, as .now ho;vn,: there are fiye prin f1'ry' winding tu rns end-it is intended that the pri hary enrrentshsll begof suit- .blifi voltage.- whilez-the -secondgry current sha umperes, both theoretically considered and here stated gis aneppro iimate exempleof a v m-king condition.

B ir making thestated eqnivalentof'the secondary coil of. the transformer in'the form of :pivotally mounted -;eopper jaws, there is provided an-,electric-; elding or "fprging apparatus \vhereinthe secondary eircnit is closed only by the metal" to-be welded obfolged placed with-in the-jgws. In day said application, ;Serial No. 1489.869; filed Augustifi. 1921., I hayesetiforth a .n ethodpf electric eIdingpr-jOrgi ig consisting su bjelctingthe parts tojgbe welded to sin ulteneousg pressure -;one to- I wards another and; to a siiitihleeleet-ric he one of about 5 volts -and-flfiglrmlvarying cross-sectional areas and in sub jccting the conductors to the current and prpgressively fusingsuch conductors and ul'i'lting them in a fusedlstate' with the fused portions of the parts to be welded; and in sqid application I have described as a new article of'mjnniije'rtu're ajnleldipg mat which comprises 'p'a'l allelf'copperj fcondiicto'rs held together and spaced iipzii't bysuit'kt'ble means, and. gtfiuxnghich preferably forms a portion of the welding mat.

Blew rsho is hefless e n two angle irons that are to be welded together (Fig 1) and hetween theseflanges I -show said ve ldi ng; nfet'oompris'ing a serieslof parallel QPP F-tC I d Q Q 'S' y} and y' diminis-hing in c ligirneteriromthe; -t0p,-bfvthe mat-to its Z l)@l;f 0m, -;the;- condi cttns- '31, ---etc. being: held irtog'ther by: 3 m8l3aljllG m8I DbeI' 'y andvthe fiox-e1 ement oi; the mabrbei-ngi indicated by z. The assembledfifimigesgzto bet-Welded or forgedrfind thoematieie now; shown-with the enter fsijrieoes 10f f'thevrtlanges'veach ini me- "chemicalcontact? witlii tshe vinnr nface -.0f :1 transverse q'ew fimembei' end as indicated iin' lF lign-l; these: jhwinfiembersi are 'to' be pressed togetherggduringuthe passage =of a secondgry ourrentp thdci'i'cuit==iEor which is closed; by the weldable esselnblage. Forthe -;1' eason;-t-hat the; opp'ose'd= surifeces of--the flenges tobe; welded with t the; intermediate mat; all-become:- f u'sed:-.-and; therefore, soft, requisite,mchainieal -p*ressnre imay rbe ap- ;-pli ed oppositblyto? theyfwo j aws lw ithout '(ledonning -;the cQpper-=ple1:es ,ieahd the": flanges will -bewprogifessiwely :weldedz as the oondnctorsr y; at diminishing :diameters' become fused and-the wholeemntconsumedin io'rmjing the' joint.

1 An important point? oi the .present inventionlies in thewfaetmhat; aslthe secondary current'cinenitiom'iing jawsvare p'ressed fowards each otheig as -themat and the flange surfacesis-fusedg the copper (plate forming memberslof t=lie.j aws are progressively closed together-relatively more core'opening, and so bronghtnnderithejinfluerrce of a mag'netic {fluxof the transformer eore,.'thus giving a maximum-1 welding curre'ntewhen Qih is required, tofiwgit as the;Weldingor -forgil'ig is approaching completion. =5 hen a primary current isfgestablished inthe' pnimary 'wind- -.ing,;-a magnQtio1.-fluxsurrounding the-core at a1l,, t;i'mes during; theqflow- )Of the primary current is established, irrespective ofnthe closing 10f qfihexsecondary circuit. 1 The corn is magnetized byiithe' primary current only; ;and, the; primary rcircuitaw-ires may. be' carf-iv f-tO' (id-lsitlereb1e distzmcesifromithe core 5 9 5%!"illlldislli'lllen t-i-ofi Athe slprimarry icu'rrent 51m: eefi emi' a'emoved from the more.

ha mleivm-iis: 'lzhefl gom;bine;ti on of: as-closed: trans-former cord-heritage p1=ime, 1fy-:winding about l-one IZP U Q hO E Zi andr' ailiyaivibf ziscondary cmrent, circuit-forming work clamping jaws in mechanically pivoted connection with opposed side portions of the core adjacent the primary winding; one of the jaws being prolonged past one side of another portion of the core and the other past the other side of said portion, and being movable towards and away from one another for gripping the Work to be welded exteriorly of the core.

Signed at New York in the county of New 10 York and State of New York this 8th day of September A. D. 1921.

IRA W. HENRY. 

